i have applied for 4 a levels (maths, physics, computer science and phycology) and i want to work part time my question is will i have enough time to have a social life
Depends on the grades you want to achieve and which university you want to get into. If you are aiming for 4A*s and a prestigious university, you will definitely not have time for a social life, with or without a part time job. Having a part time job + a social life might be just about be manageable in Y12, but definitely not in Y13.